# Horizon Dash vs Synth Sum

The clearest difference is in-app purchases: Horizon Dash at none against Synth Sum's 5. Horizon Dash also leads on iOS requirement (12.0 vs 17.0). Synth Sum's advantage is ads (none vs shown) and update cadence (daily vs every 7 months). On price, rating, ratings volume and device support there is nothing between them.

Both are free to download. Synth Sum sells 5 one-off in-app purchases. Horizon Dash asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for Horizon Dash against 5.0 for Synth Sum. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

Horizon Dash ships an update every 7 months, Synth Sum daily. The most recent releases landed on October 19, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | Horizon Dash | Synth Sum |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/horizon-dash/id1445430889/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/synth-sum-neon-dash/id6793998487/reviews) |
| Number of ratings | 1 | 1 |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 7 months | **Daily** |
| Monetization | **Ad-supported** | Free with in-app purchases |
| Size | 139 MB | 61 MB |
| Requires iOS | **12.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Henrique Silva](https://appshunter.io/developer/492945915) | [Matthew Leonard](https://appshunter.io/developer/522479113) |

## What reviewers say

### Horizon Dash

[App page](https://appshunter.io/ios/app/horizon-dash/id1445430889)

A simple yet challenging game where players collect orbs to unlock the exit. Test your skills and see if you can master all levels.

**Highlights:** Orb collection for progression, Unlockable exits, Skill mastery challenges, Simple gameplay mechanics, Addictive puzzle experience

**Features:** macOS Compatibility

**In-app purchases:** none


### Synth Sum

[App page](https://appshunter.io/ios/app/synth-sum-neon-dash/id6793998487)

A neon rhythm dash game where players tap to jump over obstacles and collect numbers. The goal is to hit the exact sum to pass through doors and progress through levels. Features include multiple worlds, practice modes, and leaderboards.

**Highlights:** Tap to jump, Hit exact sum to clear doors, 16 levels across five worlds, Practice with checkpoints, Endless and Daily modes, Earn stars for skins, Game Center leaderboards

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Neon Kit | $1.99 | one-time |
| Sunset Kit | $1.99 | one-time |
| Magenta Kit | $1.99 | one-time |
| Unlock All Worlds | $2.99 | one-time |
| All Kits Bundle | $4.99 | one-time |


## Frequently asked questions

### Is Horizon Dash free?

Horizon Dash is free to download, with no in-app purchases.

### Is Synth Sum free?

Synth Sum is free to download, with in-app purchases available.

### Which has better reviews, Horizon Dash or Synth Sum?

Horizon Dash and Synth Sum are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.

### Do Horizon Dash or Synth Sum have ads?

Horizon Dash shows ads; Synth Sum does not.

### Which is updated more often, Horizon Dash or Synth Sum?

Horizon Dash ships an update every 7 months, and Synth Sum daily. Most recently, Horizon Dash was updated on October 19, 2026 and Synth Sum on October 21, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*